US3450898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integration circuit
Assignee: General Dynamics Corp
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Filing: 1966-10-31
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Granted: 1969-06-17
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Expires: 1986-10-31
Abstract
No abstract record available.
Inventors
- 👤 Howard J Malan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:45
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/18; G06G7/184; G06G7/186; G06G7/1865
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN AN INTEGRATION CIRCUIT INCLUDING A RESISTOR COUPLED AT ONE END TO A VARIABLE VOLTAGE SIGNAL AND AT ITS OTHER END IN SERIES WITH AN AMPLIFIER SHUNTED BY A CAPACITOR, THE IMPROVEMENT COMPRISING MEANS FOR PREVENTING THE OUTPUT OF THE AMPLIFIER FROM CHANGING POLARITY, INCLUDING (A) A SOURCE OF VOLTAGE, (B) A TRANSISTOR COUPLED BETWEEN SAID SOURCE OF VOLTAGE AND THE INPUT TO SAID AMPLIFIER, AND (C) A SENSING DIODE CONNECTING THE OUTPUT OF SAID AMPLIFIER TO THE JUNCTION POINT OF SAID TRANSISTOR AND VOLTAGE SOURCE AND BEING ADAPTED TO TURN ON SAID TRANSISTOR WHEN SAID OUTPUT VOLTAGE TENDS TO CHANGE POLARITY.
Claim 2
Dependent Claim
102 words
IN AN INTEGRATION CIRCUIT INCLUDING A RESISTOR COUPLED AT ONE END TO A VARIABLE VOLTAGE SIGNAL AND AT ITS OTHER END IN SERIES WITH AN AMPLIFIER SHUNTED BY A CAPACITOR, THE IMPROVEMENT COMPRISING MEANS FOR PREVENTING THE OUTPUT OF THE AMPLIFIER FROM CHANGING POLARITY, INCLUDING (A) A SOURCE OF VOLTAGE, (B) A TRANSISTOR COUPLED BETWEEN SAID SOURCE OF VOLTAGE AND THE INPUT TO SAID AMPLIFIER, AND (C) A SENSING DIODE CONNECTING THE OUTPUT OF SAID AMPLIFIER TO THE JUNCTION POINT OF SAID TRANSISTOR AND VOLTAGE SOURCE AND BEING ADAPTED TO TURN ON SAID TRANSISTOR WHEN SAID OUTPUT VOLTAGE TENDS TO CHANGE POLARITY.
References Cited (Backward Citations)
US3378781A
Cited
US3364366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |